4ghz troubleshooting guide – Spektrum SPMAR6400NBL User Manual
Page 9

EN
9
2.4GHz Troubleshooting Guide
Problem
Possible Cause
Solution
Aircraft will not
“throttle up”but
all other controls
seem to function
User did not lower
throttle trim and throttle
stick prior to initializing
the aircraft
Lower throttle stick and
throttle trim to their lowest
settings
Throttle channel is
reversed.
Futaba transmitters
(equipped with Spe-
ktrum modules) may
require you to reverse
the throttle channel
Reverse throttle channel on
specific transmitter if
applicable
LED on aircraft
remains flashing
and cannot be
controlled by
transmitter
User did not wait at
least 5 seconds after
powering the transmit-
ter prior to
connecting the flight
battery to the aircraft
Unplug, then reconnect
flight battery
User bound the aircraft
to a different trans-
mitter
Rebind aircraft to your
desired compatible
transmitter
Transmitter was too
close to aircraft during
the initialization process
Move transmitter (powered
on) a few feet from the
aircraft prior to reconnect-
ing the flight battery
Controls appear
to be reversed
after binding
to a different
transmitter
User did not initially set
up transmitter prior to
binding to the aircraft
See the “Advanced
Programming” section of
this manual
Aircraft does not
function after
connecting flight
battery and
aircraft smells
burnt
User may have ac-
cidentally plugged the
flight battery in with the
wrong polarity
Replace AR6400NBL board
and ensure the RED polar-
ity marks are facing the
same direction when
connecting the flight bat-
tery to the AR6400NBL
board